Chapter 3 – Plant Kingdom

Cyanobacteria are classified under

• a.Protista
• b.Plantae
• c.Monera
• d.Algae

Fusion of two motile gametes which are dissimilar in size is termed as

• a.Oogamy
• b.Isogamy
• c.Anisogamy
• d.Zoogamy

Holdfast, stipe and frond constitutes the plant body in case of

• a.Rhodophyceae
• b.Chlorophyceae
• c.Phaeophyceae
• d.All of the above

A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to

• a.Pteridophytes
• b.Gymnosperms
• c.Monocots
• d.Bryophytes

A Prothallus is

• a.A structure in pteridophytes formed before the thallus develops
• b.A sporophytic free living structure formed in pteridophytes PLANT UNIT I:KDINGDOM IVERSITY IN THE LIVING WORLD 11
• c.A gametophyte free living structure formed in pteridophytes
• d.A primitive structure formed after fertilization in pteridophytes

Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

• a.Monocots
• b.Dicots
• c.Pteridophytes
• d.Gymnosperms

The embryo sac of an Angiosperm is made up of

• a.8 cells
• b.7 cells and 8 nuclei
• c.8 nuclei
• d.7 cells and 7 nuclei

If the diploid number of a flowering plant is 36. What would be the chromosome number in its endosperm?

• a.36
• b.18
• c.54
• d.72

Protonema is

• a.Haploid and is found in mosses
• b.Diploid and is found in liverworts
• c.Diploid and is found in pteridophytes
• d.Haploid and is found in pteridophytes

The giant Redwood tree (Sequoia sempervirens) is a/an

• a.Angiosperm
• b.Free fern
• c.Pteridophyte
• d.Gymnosperm